Valve seat construction having a resilient member around the perimeter of the seat member
US4067542A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1977 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Jan 10, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/0227
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve structure having a valve body with a body recess therein surrounding the valve bore and an annular floating seat member or ring in the body recess for contacting a gate member. The seat ring has an annular groove around a mid-portion of its outer periphery with a resilient sealing member mounted therein. The body recess is defined by a pair of radially stepped wall portions having different diameters and joined by an abutment. The seat ring has a pair of complementary stepped outer peripheral portions facing the wall portions with the groove being positioned between the stepped portions of the seat ring. The seat ring is positioned in the recess and the annular resilient sealing member between opposed sides of the groove is compressed between the abutment on the valve body and an opposed side of the groove in the seat ring to provide sealing between the seat ring and the body and to resiliently urge the seat ring toward the gate member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.